je te laisserai des mots lyrics

There's this song lyrics that's been puzzling me. The song is quite popular on Instagram these days — Je te laisserai des mots (listen to the song here if you aren't acquainted). All's fine up until the point where he starts singing in a falsetto, and I can't quite make out exactly what he's saying. Naturally, I took the help of the internet ... part of your world lyrics halle